<template>
  <div class="upload-container">
    <el-link type="primary" @click=" dialogVisible=true">添加图片</el-link>
    <el-dialog :visible.sync="dialogVisible" width="30%">
      <el-upload
        :multiple="true"
        :file-list="fileList"
        :show-file-list="true"
        :on-remove="handleRemove"
        :on-success="handleSuccess"
        :on-error="handleError"
        :headers="headers"
        :before-upload="beforeUpload"
        class="editor-slide-upload"
        :action="baseUrl"
        list-type="picture-card"
      >
        <el-button size="small" type="primary">
          点击图片
        </el-button>
      </el-upload>
      <el-button @click="dialogVisible = false">
        取消
      </el-button>
      <el-button type="primary" @click="handleSubmit">
        确定
      </el-button>
    </el-dialog>
  </div>
</template>

<script>
import crypto from 'crypto-js'
const appkey = 'Sz7Jo5M4T1smiHgS'
// eslint-disable-next-line radix
const timestamp = parseInt(Date.now() / 1000)
const nonceStr = 'HBxcnRjX'

export default {
  name: 'EditorSlideUpload',
  props: {
    color: {
      type: String,
      default: '#1890ff'
    }
  },
  data() {
    return {
      baseUrl: process.env.VUE_APP_BASE_API + '/web/upload/bigFile?source=web&type=courseware',
      dialogVisible: false,
      listObj: {},
      fileList: [],
      headers: {
        Authorization: null
      }
    }
  },
  created() {
    const temp = [appkey, timestamp, nonceStr, encodeURIComponent(this.baseUrl)].sort()
    const myTemp = temp.join('')
    const hmacSHA256 = crypto.HmacSHA256(myTemp, '2ac16dc294046ed43a87d70ad8cb08013fab0b57')
    const signature = crypto.enc.Base64.stringify(hmacSHA256)
    const signs = `appkey=${appkey},timestamp=${timestamp},nonceStr=${nonceStr},sign=${signature},data=${encodeURIComponent(this.baseUrl)}`
    const tokens = `${crypto.MD5(signs)}`
    this.headers = {
      Authorization: `bearer ${this.$store.state.account.accessToken}`,
      channel: '00',
      application: '02',
      source: 5,
      appkey,
      nonceStr,
      timestamp,
      sign: tokens

    }
  },
  methods: {
    checkAllSuccess() {
      return Object.keys(this.listObj).every(item => this.listObj[item].hasSuccess)
    },
    handleSubmit() {
      // const arr = Object.keys(this.listObj).map(v => this.listObj[v])
      // if (!this.checkAllSuccess()) {
      //   this.$message('Please wait for all images to be uploaded successfully. If there is a network problem, please refresh the page and upload again!')
      //   return
      // }
      // console.log(arr)
      //  this.dialogVisible = false
      // this.$emit('successVic', this.fileList)
      this.$emit('successCBK', this.fileList)
      this.listObj = {}
      this.fileList = []
      this.dialogVisible = false
    },
    handleSuccess(response, file) {
      // const uid = file.uid
      console.log(1)
      console.log(response, file)
      this.fileList = [...this.fileList, { uid: file.uid, url: response.data }]
      // const objKeyArr = Object.keys(this.listObj)
      // for (let i = 0, len = objKeyArr.length; i < len; i++) {
      //   if (this.listObj[objKeyArr[i]].uid === uid) {
      //     this.listObj[objKeyArr[i]].url = response.files.file
      //     this.listObj[objKeyArr[i]].hasSuccess = true
      //     return
      //   }
      // }
    },
    handleRemove(file) {
      const uid = file.uid
      const objKeyArr = Object.keys(this.listObj)
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          delete this.listObj[objKeyArr[i]]
          return
        }
      }
    },
    beforeUpload(file) {
      const _self = this
      const _URL = window.URL || window.webkitURL
      const fileName = file.uid
      this.listObj[fileName] = {}
      return new Promise((resolve, reject) => {
        const img = new Image()
        img.src = _URL.createObjectURL(file)
        img.onload = function() {
          _self.listObj[fileName] = { hasSuccess: false, uid: file.uid, width: this.width, height: this.height }
        }
        resolve(true)
      })
    },
    handleError(e) {
      this.$message({
        type: 'error',
        message: '图片上传失败'
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.editor-slide-upload {
  margin-bottom: 20px;
  /deep/ .el-upload--picture-card {
    width: 100%;
  }
}
</style>
